Clutch mechanism for transmission gearing



Oct 25 1927 J. F. GAYLORD CLUTCH MEGHANISM F v Filed March 2 5, 1925 2 Sheets-Sheet. l

XEEEL 43@ trouwt;

, 1,646,64sA f w. W- X,

I VPatented Oct. Z5, 1927.

sPAiffEN fig-forgi I l, 'Appnca'in niet1 neigen v25,- ii'ezfl'seriaifno. 15,267.

' My saidinvention vrelates totransinission.

ygearing and it is an object thereof-,to provide 1 improved clutch- Inechanisin for connectingL ashaft. Other objects gears selectively to the ysicdojoined specifica- 5 willl appear ffroin i tion." 1 v Referring to the accompanying drawings, Vwhich .are made a partfhe'reoflandon which similar reference characters.indicate'sinilar 10 parts. 'l 1 .Il 1

Figure l'isa'side elevation'partly in sec# Ationfo my irnproved gearing, vFigure2, aside elevation of aci'utch collar providingaA carrier for certainciutch pins mIDIg a part offiny invention, 'l

l -Figure 3,21 section on iine3-3 ofFigure` l, Figurec, aside elevation of ayinodiied f'cirgrnpa'rtiyin section, f j Figure fan endvieW of a( ypart shown in ,.20 Figure 4 looking-from' the right, y' 'Figure 6, an end view of agearfof rinedi- Vvfied form, and f' Figure 7, a section on line 7 7 of Figure 6. In the drawings referencer, character 10 fshaft'fll'is vsuppcited, said A"shaft having a Y recess'in 4which a reduced part. 'a't' the end 'of adriven shaft 12 engages;`

13 having eight internal recesses lfil'to" receive clutchpins 15. These clutch lpinsfare heldby a collarflhaving agroove toreceive a fork L (notshoivn) ,andthefcolla'rhas notchesf'l p direction."

Th c'lutch 'pins 'redncedends Vfori:

` Ming'from1thesinailertog'the larger' parts.v

"As `shovvn 'the pins'fslide in grooves inthe shaft 12, 5 saidgrooves andy recesses 4vcooperating v'to these'at the ieftehand'side andare adapted toengage recessesina gear 17 "heidin piacev Y 1 l y u l In thewform of," thefiinvention `'shovvnfin by a-coliar' 18 engaging anannula'r `groove VVfin the-shaft 12. vAnother gear 19 vonsaid u; ,55 .-1 shaft is connected f thereto by f spiinesBQ yand lis prvided With vanv annular' groove lier' ren-f indicates :a ygear casing in Vvv'hichaV driving Theyshaft 11 is.'

provided. at its inner end 1 with 4a spur gearv f `;'enihracing A'reduced portions 'of the chit-ch p'ins,ffitting between opposed'shouiders so Y togive positive Inovement theretoineither engaging -inthe recesses 14v ofthe gearl?)y Another endogne/i' 'on shane-1 pfovias' *forlowf speedto se'cnreJvvhieh the" clutch Collar 1 6 is placed in nentral psitionand'tghe gagenientby a shift-ing forkfmnt shovvn). .L f' `s A countershat'21is niont'edinthe' casing Below; the 'shafts 11 andilz andA is` previded l 'vvit'h'fixed'vge'ars''22fl and 23,'7ithei1'ignvv '.iinderst'ood that'vvhen'the pinsllfarenloved intoenga'gement With-the'gear at' 13 the drive will loe directly .through shaft A11, .gear 313,'

65 gear? 17"th'e drive vvil` he through shaft 11, y

Vgears-13 fand 22,' Vshaft 21, gears 23 and 17a-nd 'Y gear 19 isfshiftedinto 'engagement'wth gear 24"Whereu`ponthe driveisthroughfshaft-ll,

gears 13land 2,2, shaft 21, gears 24 and 1,91and For revev lse drive the shaft 21 `is `provided i with` ai.' `-fixed '.gear.- l2 5.: 'JA pinionw26 'meshes' Withgear V25,.y said pinion beingrmountedfon a stub or 1" .ltil1e gear. case jor in 'any` other de-V sirablelnianner s0-was. to beinfposition for engagement 0 ,-itsteethfbythe.teeth.ogear f 19.` The chitchfcollar' being. in :neutral -p'osition Vand the'gear 19 being shifted intowen-V have 'shown a.' driving,-shaftm11f-vvitha clutch-element 27 fatjonei endthereof having {high-or long teeth :2.8f'andf1ovv or f short: teeth L29, vwhich teethg'provide'hetvveenfthein-sem-"- 1 c'i'rci'ilari-spacesito receivethe .outer or engag i :ing 'ip art offjchitchv pins operated bv z ai. clutch collar 30'; -.'l`fhese pins are provided with re# n f `duced body. portions; 31l and Withi straight tir-.cylindricalheads182. "When .thel clutch. 'fooi-1an.v is? rnoved tovvardthegclutch inemhe'r 27" on!` tovvard another 'clutch' member '.(not

with.' fgear teethl ,as in- ;Fig. 11, lif "desired, the

ido l' pins I'naystrike vaga-instlongiteethdcnt.irnr mediateiyfupon .passing them can` mvej "for- 'Ward and Amayagainl strik'ej against-1 ends .of

short teethfiithe difference in 4 speed is sufiijcient,'but iniist' necessarilyv -engagefvvith the l v y V{sidesf-O1" the long teeth-"nextencountered and Ithus insure speedy and' certainengagement lstrike agains',t;y theends off teeth -29 and tem-y 'les ' `"5.1; Havingthus fully :described my v said f a pair` of collars'40 and 41 and a spring 39 n forces ',thefork toward Ythe col1arf:41. vThe longitudinahmovement of the rod toward `the left to shift the parts into high gear will bringthe notch 42 under'tlie detent 43 evenif the pins 32 strike against the ends of teetli29 and prevent the full movement of the collar and*l the fork., The spring being compressed as illustrated inrFig. 4

.continues to .urge these parts toward fullV engaging position with the fork resting against collar V4l andv the desired engage- .ment willtake place at some future time as when the car runs ahead :ofthe engine in Vvgoing down hill.

. InFigures gand 7 I have shown another forni of .theinvention in which 33indicates a gear. havingsix recesses at 34which -are enlarged at the outer end and reduced at the i inner endfas indicated at3t'rl The outer and inner parts Vare cylindrical andconcentric -and are connected` by aftapered facev 36. The three pins, which coact with this gear, `may be connected to a collar as in the `forms ofinvention heretofore described and these lpins maybe made'in either of the forms heretofore described.

Y While the clutch is shown as arranged betweenfthehigh and VVthevsecond speed gears, ,which is a conventional form for automobile transmissions, the same 'device might obviouslyV .bei utilized for covering e all the speeds. of the transmission or it might be `used in some special; formV of gearing simply. las a couplingand uncoupling device which Y might Vperhapsipick up only a single'speed.

It 'is `to be understood therefore that specific :terms-are 'jused in the specification and .claims forpurposes of description only -and not for purposes of limitation except yas necessitated by the prior art. It isptoy be understood also that numerous changes. may ybe'inade in the formand arrangement of the aparts of Athe mechanism, asforv example, in the shape ofrthe clutch,- pins which again u-mayfbe .ontheclutch collar or onthe gears for other. elementsv toy be clutched thereto, re-

`1 art that-'various .otherichanges may be made y Jce'sses being formed-"in the 'coacting part. It will be .obvious to those skilled in the :fin my'devicefwithout departing from the e spirit ofthe invention and therefore I do not limit myself .to what is shown in the drawings andV described in the specification but only as indicated in the appended claims.

invention, `what I claim as new and "desire to secure by Letters Patents,is:

l. A clutch mechanism for transmission gearing comprising a gear having recesses Vin its face, a clutch'f-collar associated with saidV gear and clutch pins carried by said collar,'said clutch pins having uniformly reduced portions of material axial length at normal diameter by tapered faces,lsubstantially as set forth. f

2. A clutch mechanism for transmission gearing comprising a shaft, a gear coaxialtherewith,v and a clutch collar on the shaft` having a seriesk of1 clutch pins about its inner periphery adaptedto engage lateral recesses in said gear said pins being 4provided with portions'of material axial length adjacent their outer ends of a 'reduced uniformsize, substantially as set forth.

3. A clutch mechanism for'transmission gearing comprising a gear having .recesses v parallel to its axis, a longitudinally grooveld shaft coaxial with said gear and clutch pins slidably `mounted in the grooves of said shaft, said pins having portions shaped to their outer ends connected to lthe parts of iit within the space formed by a recess yand l a coacting groove and being'providedwith reduced end portions of material l axialA length and of a .uniforml size to facilitate entry into such spaces, substantially"v as Vset forth. Y y

4. A power transmission mechanism including a shaft having longitudinal grooves, -a collar slidable thereon, pins slidable A-in said grooves and having their outer end portions of substantial axiallength andrpof a reduced size anda memberrhaving recesses for engagement by said pins,substantially as set forth. ,Q

5. A lpower transmission mechanism including a shaft having: longitudinal grooves,

a collar slidable thereon,gpins slidable in body portions withv reduced vends v'ofisube stantial axial length fitting in such recesses,

and vtapered facesconnecting-,the body portions to the reduced ends on t stantiallyas set forth. f y ,l

6. A lpower transmission mechanismfincluding a shaft having longitudinal grooves, a collar slidable thereonpins sli-dable in lsaid grooves, anda member havingrecessesfor engagement by said pins, said ,pins having cylindrical. Vbody portions fitting -in such recesses with concentric reduced entering ends of substantial axial length, y,substantially as set forth. y Y 7. A power ytransmission a collar slidable thereon, pins slidable in said grooves, a member having recesses "for Vengagement by said pins, saidpins having?y 130 cylindrical body portions .fitting` in such the pins, sub-v. V

ysaid grooves, a member having-recessesy for engagement by said pins, said Y pins havingl v A mechanism in- 125 cluding a shaft having longitudinal grooves,

recesses with concentric, reduced entering ends of substantial axial length, andl taper- 'ng faces between said body portions'and ends, substantially as set forth.

8. A. powerV transmission'mechanism including a shaft, a collar slidable thereon, a gear spaced' axially of the shaft, saidcollar andr gear being provided respectively on their opposed faces with recesses andthe pins fitting in the recesses having reduced entering portions of substantial axial length and of a uniform size, substantially asset forth.

9.v YA

ower transmission mechanism including a shaft, a collar'slidable thereon, a

member on the shaft said vcollar and said member being provided respectively on their opposed faces with recesses, and pins fitting in the recesses, said pins having reduced entering portions of substantial axial length andvof uniform size, substan l A tially as set forth.

Yl0. A power transmission'mechanism including avshaft, a collar slidable thereon, a

, gear on the shaft, said collar and gear being l provided respectively on their opposed faces' lrecesses of the gear, the enteringends of the with recesses, pins fitting in the recesses of the collar .andlpositionedfto enter theA pins being of substantialaxial length andof pins and recessesof the gear fittingelosely togetherwhen fully engaged, substantially as set forth. y

11. .A power` transmissionV mechanism comprising ya member, a second member comprising a clutchpcollar associatedl withV v ,said first member,l recesses 1n one of Vsaid members, pins carried by the other of'said members adapted toenter saidrecesses-qthe entering ends of said'pins being of `substanf In witness whereof, I have hereunto set my hand this 5th day.;l of March, f

nineteen hundred and twenty-five. e

` JOHN F. GAYLORD."

30 reduced uniform sizel and smaller than the y Vouter ends of the recesses of the gear, said 

